F01N 2330/34
With flow channels of polygonal cross section
Official title: with flow channels of polygonal cross section
F01N2330/34 (With flow channels of polygonal cross section) appears on 179 US grants and 191 published applications in this corpus.
Search patents in F01N- Granted patents
- 179
- Published applications
- 191
- Assignees
- 59
- Inventors
- 318
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 2 |
| 2003 | 2 | 2 |
| 2004 | 1 | 10 |
| 2005 | 2 | 7 |
| 2006 | 1 | 10 |
| 2007 | 2 | 3 |
| 2008 | 8 | 7 |
| 2009 | 3 | 3 |
| 2010 | 5 | 8 |
| 2011 | 9 | 3 |
| 2012 | 5 | 4 |
| 2013 | 4 | 4 |
| 2014 | 4 | 7 |
| 2015 | 7 | 18 |
| 2016 | 5 | 11 |
| 2017 | 13 | 21 |
| 2018 | 12 | 16 |
| 2019 | 14 | 14 |
| 2020 | 20 | 10 |
| 2021 | 10 | 5 |
| 2022 | 6 | 9 |
| 2023 | 8 | 10 |
| 2024 | 8 | 4 |
| 2025 | 2 | 2 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Honeycomb structure8 Sep 2026US 12,728,377 B2NGK Insulators, Ltd.
- Electrically powered catalyst heater for fluid treatment systems21 Jul 2026US 12,687,124 B2Corning Incorporated
- Exhaust purification apparatus5 May 2026US 12,618,352 B2Toyota Jidosha Kabushiki Kaisha
- Exhaust gas purification catalyst8 Jul 2025US 12,350,653 B2Mitsui Mining & Smelting Co., Ltd.
- Rectangular outlet honeycomb structures, particulate filters, extrusion dies, and method of manufacture thereof4 Feb 2025US 12,214,524 B2Corning Incorporated
- Exhaust gas control device14 May 2026US 2026/0132727 A1Toyota Jidosha Kabushiki Kaisha
- Exhaust purification apparatus13 Nov 2025US 2025/0347243 A1Toyota Jidosha Kabushiki Kaisha
- Heat generating device20 Mar 2025US 2025/0098034 A1NGK Insulators, Ltd.
- Honeycomb structure and heat exchanger19 Sep 2024US 2024/0310124 A1NGK Insulators, Ltd.
- Ceramic honeycomb filter8 Aug 2024US 2024/0261715 A1Proterial, Ltd.
Most cited
By later US patents
- Monolithic catalyst member and support therefor105US 4,335,023 AEngelhard Corporation · 1982
- Honeycombed structures having open-ended cells formed by interconnected walls with longitudinally extending discontinuities56US 3,983,283 ACorning Glass Works · 1976
- Ceramic honeycomb composite structure, catalyst supported thereby and method of producing the same50US 4,253,992 ANGK Insulators, Ltd. · 1981
- Combination catalytic converter and heat exchanger that maintains a catalyst substrate within an efficient operating temperature range for emmisions reduction50US 5,987,885 AChrysler Corporation · 1999
- Catalytic converter exhaust section for an internal combustion engine49US 5,547,641 ACaterpillar Inc. · 1996